We build
websitesmobile appsAI toolsautomations
for St. Louis
businesses.
St. Louis businesses compete in one of the largest markets in the state. We build websites, iOS apps, and AI integrations that help STL companies show up first and convert the visitor once they land. Run our free AI audit and see exactly what your current site is costing you. Takes 60 seconds.
Three disciplines. One studio.
Websites, iOS apps, and AI integrations. All built in-house.
The first thing a new customer does is look you up. If your site loads slow, breaks on mobile, or buries your phone number, they're calling your competitor. We fix that. SEO, design, and local search included. Three tiers. Fixed prices. Live in days.
- Local SEO built in from day one
- Works flawlessly on every phone
- Fixed price, zero surprises
Not a web wrapper. A real native app that looks like it belongs on the App Store. Accounts, payments, push notifications. Give your customers a reason to keep coming back.
- Keeps users engaged and coming back
- App Store submission handled end to end
- Scales from offline tool to full platform
Stop doing manually what a machine can do in seconds.
Start your projectCustom AI built around your actual workflows. Not a generic chatbot. Saves hours of repetitive work every week. Powered by Claude, wired into your existing tools.
- Saves hours of manual work weekly
- Trained on your business, not someone else's
- Works inside tools you already use
Built by one person. Zero handoffs.
M&W Mobile Detailing
Full rebrand and site built for a Columbia, MO mobile detailing operation. Launched from zero web presence to a converting landing page with booking flow, SEO-optimized service pages, and exotic vehicle portfolio. 100 Google reviews, 5.0 rating.
BreadStack
Student spending and budgeting app built for the Mizzou market. Apple Pay extension for real-time spend tracking, group split features, and budget envelopes. Built solo with Swift, Next.js web companion, and Supabase backend.
Andes Virus Tracker
Live hantavirus outbreak tracking platform monitoring the 2026 Andes virus emergency across Argentina and Chile. Real-time case counts, interactive map, outbreak timeline, and automated news aggregation. Built solo with Next.js and Supabase.
Your business here.
Get a free AI audit of your current site. See your score, the top issues costing you customers, and exactly what we'd fix.
We build for any business.
Dentists, contractors, restaurants, law firms. If your customers search for you online, we can build something that converts them.
Don't see your industry? We've probably built something close. Ask us.
Powered by world-class tools
Built with the same stack as the best tech companies.
Every site and app we build runs on the same infrastructure used by Vercel, OpenAI, and top SaaS companies.
How we work.
No surprises.
Designjoy-style async-first workflow adapted for the Missouri market. One kickoff call. Friday Loom updates. You stay in control without living in meetings.
Free AI Audit
Enter your URL. Our AI scores your site across 8 dimensions in 60 seconds. You get a real report with real problems. For free, no strings.
Brief & Contract
If you want us to fix it, we scope the exact work, sign a clear contract, and collect 50% upfront. No ambiguity, no scope creep.
Build
We build fast. Single pages in 3 days. Full sites in 2 weeks. iOS apps in 3 to 5 weeks. Weekly Loom updates so you're never out of the loop.
Maintain
After launch, we don't disappear. Monthly updates, hosting, security, new features. All on a flat subscription you can pause or cancel anytime.
No guessing. No agency BS.
Browse what's included in each tier. Answer 4 quick questions and we'll match you to the right package and show you the exact price.
A sharp one-page site that tells people who you are, what you do, and how to reach you. Everything a small operator needs to look legit online.
- Custom design. Looks like your business, not a template.
- Works perfectly on phones and tablets
- Contact form goes straight to your email
- Set up to show on Google
- Fast, secure hosting included
- 30-day bug window after launch, free of charge
A full business site you can update yourself. Multiple pages, your own content control, and the tools that turn visitors into customers.
- Multi-page site (Home, About, Services, Contact, and more)
- Update your own text and photos (no code needed)
- Blog or news section if you want one
- Every contact form submission saved, never lost
- See exactly who visits and where they come from
- 30-day bug window after launch, free of charge
You're building something bigger. Booking, payments, customer logins, AI features, or a full web app. We scope it together and quote it right.
- We map out exactly what to build before writing a line of code
- Payments, logins, booking, or custom integrations
- AI features available if needed
- Different access levels (admin, staff, customer)
- Support window matched to the build
All projects: 50% upfront · 25% midpoint · 25% delivery. IP transfers on final payment. One-off changes outside a plan are billed at $149/hr, 1-hour minimum.
No agency games. Just good work.
Whether you run a shop on Cherokee Street, a practice in Clayton, or a service business out in the county, your customers check you out online before they ever call. We make sure that first impression closes the deal.
Transparent pricing
Fixed quotes from a short questionnaire. Websites start at $599. You see the number before work begins.
Built fast
Single page sites live in days. Every timeline is locked up front so you always know the launch date.
Owned by you
You own the site, the code, and the domain from day one. No lock-in, ever.
Missouri based
A real local agency in Columbia, MO. No out-of-state call center, no runaround.
St. Louis and the surrounding area
We work with businesses across Eastern Missouri, from Central West End, Clayton, The Loop, and out to the nearby towns. If you are near the Gateway Arch, you are in our area.
Web development in St. Louis, answered
Do you build websites for St. Louis businesses?
Yes. Corestack builds custom websites, iOS apps, and AI integrations for businesses in St. Louis and across Eastern Missouri. We are a Missouri agency based in Columbia, so working with a St. Louis client is straightforward, remote or in person.
How much does a website cost in St. Louis?
Pricing is fixed and transparent. Websites start at $599, and every project gets an exact quote from a short questionnaire before any work begins. No hourly surprises and no padded estimates.
How fast can you launch a site for my St. Louis business?
A single page site can go live in days once we have your content and access. Larger multi-page builds take longer, and we lock the timeline before we start so you always know the date.
Do I own the website when it is done?
Yes. You own the site, the code, and the domain from day one. No lock-in, no holding your project hostage. That is true for every St. Louis client.
Can you help if I already have a site near the Gateway Arch?
Absolutely. Start with the free AI audit. It scores your current site in about 60 seconds and shows exactly what is costing you customers, then we fix what matters.
I sell AND build.
That's the edge.
I'm Wesam. I live right here in Columbia, Missouri. Before I ever built a website for someone else, I ran M&W Mobile Detailing, scheduling crews, chasing invoices, and watching my own website hurt me every day.
Most agencies sell you a site and disappear. Most developers can't explain why a site should generate leads. I've been on both sides of that table, and I built Corestack because I got tired of the gap.
I use modern tools and I use them well. But the strategy, the judgment, and every decision are still mine. You're hiring a person who thinks about your business, not software that generates things. The difference is the thinking behind it.
Web tips for St. Louis businesses.
Why We Publish Our Prices (And Why Most Missouri Agencies Won't)
Most web design agencies hide their pricing. Corestack publishes exact numbers. Here's why that decision matters and what it means for you as a client.
ReadWhy Most Small Business Websites Score Under 5/10 (And How to Fix Yours)
A breakdown of the 8 categories that make or break a small business website, with real fixes for each. Most Missouri business sites fail more than half of these.
Read5 Signs Your Columbia, MO Business Website Is Losing You Customers
If your website has any of these five problems, you're actively losing leads in Columbia, Missouri. Here's how to spot them and what to do.
ReadYour site is losing
customersrevenueleadsbookings
every single day.
Free AI audit in 60 seconds. See exactly what's broken, what it's costing you, and what it takes to fix it.